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Finding the Fourth Proportional to 255.77, 384.36 and 249.63

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Solution

The fourth proportional to 255.77, 384.36 and 249.63 is: 375.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.77 : 384.36 = 249.63 : x
  2. Step 2: Convert to fraction form
    255.77/384.36 = 249.63/x
  3. Step 3: Cross multiply
    255.77x = 384.36 × 249.63
  4. Step 4: Simplify right side
    255.77x = 95,945.87
  5. Step 5: Solve for x
    x = 95,945.87/255.77
  6. Step 6: Final answer
    x = 375.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.